Is there something wrong with my google code?

[Sootah]

On my site TweaksForGeeks (http://www.tweaksforgeeks.com) I get the leaderboard ad, but most of the time the tower ad on the left side is not filled. There are some pages that it is filled on, but not nearly enough.

http://www.tweaksforgeeks.com/ModSysStart.html always fills, but the main page does not and it looks like it has plenty of words that it should associate. Have I somehow messed up the code on the pages that don't display? (Give it a look, would ya?)

Thanks in advance -Sootah

[Sootah]

Huh, even my LINKS page fills. What is up? http://www.tweaksforgeeks.com/links.html

[Cyclone]

It happens when there is not enough advertiser campaign available for your page. This availability changes with time for the same page.

[r2d2]

I get that too, seemed to be worse when I first added the second ad box, but still dont get ads on some pages.

I thought it was a problem with my code at first too! Think it must have just been coincidence that they showed in IE, but not FireFox - but very frustrating!

[s2kinteg916]

Its a common thing when u put more than one ad on a page...

[davesplace1]

I'm going back to just one adsense ad per page. On my sites it is just not worth putting a google search box or second ad. Adsense has done really well on my sites, but the search box and second ad have not done so well.

[Sootah]

Hmm. I'll probably remove the leaderboard and replace it with somthing. What should I replace it with that won't piss google off? (Any pays well, prefferably)